INBDE (Integrated National Board Dental Examination) Practice Exam

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What provides resistance to vertical dislodging forces in dentures?

Support
Stability
Retention
Buccinator

The correct answer is: Retention

Retention provides resistance to vertical dislodging forces in dentures by holding the denture to the underlying tissues, preventing it from being lifted away from the mucosa. Support helps to prevent the denture from moving vertically downwards under occlusal forces. Stability refers to the resistance to horizontal dislodging forces, preventing the denture from moving side to side or front to back during function. The buccinator muscle, while important for maintaining proper cheek support and function in dentures, is not directly related to providing resistance to vertical dislodging forces.